body {
    /*background: antiquewhite;*/
    background-color: aqua;
    text-align: center;
    height: 100vh;
}

#main-div {
    color: #bdbdd0;
    font-size: 50px;
    border-style: dashed;
    /*position: absolute;*/
    /*margin-top: 50%;*/
}


#back-test {
    color: #bdbdd0;
    font-size: 50px;
    border-style: double;
    /*position: absolute;*/
    /*margin-top: 50%;*/
}

#index-a {
    color: #b61b60;
    font-size: 50px;
    /*position: absolute;*/
    /*margin-top: 50%;*/
}

